公开(公告)号：CA2709681A1

公开(公告)日：2009-07-16

申请号：CA2709681

申请日：2008-07-17

Applicant: QUALCOMM INC

Inventor： CHANG TAE RYUN ,  KIM JE WOO ,  PARK JONG HYEON ,  PARK JU WON ,  LEE CHUN WOO ,  SIM BOK TAE

IPC: H03M13/00 ,  H04L12/28

Abstract: A method and apparatus for decoding encoded data bits of a wireless communication transmission are provided. A set of a-priori bit values corresponding to known bit values of the encoded data bits may be generated. Decoding paths that correspond to decoded data bits that are inconsistent with the a-priori bit values may be removed from the possible decoding paths to consider, and decoding the encoded data bits by selecting a decoding path from remaining decoding paths of the possible decoding paths that were not removed.

公开(公告)号：CA2709908A1

公开(公告)日：2009-06-25

申请号：CA2709908

申请日：2008-10-31

Applicant: QUALCOMM INC

Inventor： EDGE STEPHEN W ,  BLACK PETER JOHN ,  WU QIANG ,  ZHAO WANLUN ,  TOKGOZ YELIZ ,  PADOVANI ROBERTO ,  NAGUIB AYMAN FAWZY ,  KIM JE WOO ,  DAYAL PRANAV ,  AGASHE PARAG ARUN ,  BHUSHAN NAGA

IPC: H04W64/00

Abstract: Briefly, in accordance with one embodiment, a method of transmitting signals is provided. Signal waveforms are transmitted from at least two respective sectors. The at least two respective sectors are from at least two different sets of a superset of sectors. The transmitted signal waveforms include signal waveforms at least nearly mutually orthogonal at least along a particular signal dimension. An advantage of such an embodiment, for example, is reduced signal interference.

公开(公告)号：CA2706480A1

公开(公告)日：2009-06-18

申请号：CA2706480

申请日：2008-01-31

Applicant: QUALCOMM INC

Inventor： PARK JONG HYEON ,  SIM BOK TAE ,  KIM JE WOO ,  HURT JAMES Y ,  GLAZKO SERGUEI A ,  NANAVATI SAMEER

IPC: H04L1/18

Abstract: A method and apparatus for combining retransmitted hybrid automatic repeat-request (HARQ) messages divided into coding blocks in an orthogonal frequency-division multiplexing (OFDM)/orthogonal frequency-division multiple access (OFDMA) receiver are provided. According to such a coding-block-based HARQ combining scheme, the quality of each coding block may be compared to a threshold to determine whether the decoded bits or the HARQ combined signal should be saved for each coding block for subsequent HARQ iterations. In addition to reducing the required HARQ buffer size while preserving the combining gain, coding-block-based HARQ combining may also provide fast decoding and reduced power consumption when compared to conventional HARQ combining techniques.

公开(公告)号：CA2668633A1

公开(公告)日：2008-05-15

申请号：CA2668633

申请日：2007-11-07

Applicant: QUALCOMM INC

Inventor： ZHU JIE ,  PARK JONG HYEON ,  KIM JE WOO

IPC: H04K1/10

Abstract: An embodiment of the invention is a technique for preamble detection and synchronization. A symbol correlation of a sequence of symbols is computed i n a correlation window using one of a time-domain correlation and a frequenc y-domain correlation. The sequence of symbols is received in an orthogonal f requency division multiple access (OFDMA) wireless communication. A symbol i s verified from the symbol correlation. The symbol is one of a preamble symb ol and a data symbol.

公开(公告)号：BRPI0820702A2

公开(公告)日：2015-06-16

申请号：BRPI0820702

申请日：2008-12-12

Applicant: QUALCOMM INC

Inventor： PARK JONG HYEON ,  KIM JE WOO ,  NANAVATI SAMMEER ,  HURT JAMES Y

IPC: H04L1/18

公开(公告)号：BRPI0820736A2

公开(公告)日：2015-06-02

申请号：BRPI0820736

申请日：2008-01-31

Applicant: QUALCOMM INC

Inventor： PARK JONG HYEON ,  SIM BOK TAE ,  KIM JE WOO ,  HURT JAMES Y ,  GLAZKO SERGUEI A ,  NANAVATI SAMEER

IPC: H04L1/18

公开(公告)号：BRPI0820595A2

公开(公告)日：2015-05-19

申请号：BRPI0820595

申请日：2008-01-31

Applicant: QUALCOMM INC

Inventor： PARK JONG HYEON ,  PARK JU WON ,  KIM JE WOO

IPC: H04L27/26

公开(公告)号：BRPI0718868A2

公开(公告)日：2013-12-24

申请号：BRPI0718868

申请日：2007-11-07

Applicant: QUALCOMM INC

Inventor： ZHU JIE ,  PARK JONG HYEON ,  KIM JE WOO

IPC: H04K1/10

Abstract: An embodiment of the invention is a technique for preamble detection and synchronization. A symbol correlation of a sequence of symbols is computed in a correlation window using one of a time-domain correlation and a frequency-domain correlation. The sequence of symbols is received in an orthogonal frequency division multiple access (OFDMA) wireless communication. A symbol is verified from the symbol correlation. The symbol is one of a preamble symbol and a data symbol.

公开(公告)号：CA2667805C

公开(公告)日：2013-01-29

申请号：CA2667805

申请日：2007-11-05

Applicant: QUALCOMM INC

Inventor： PARK JU WON ,  PARK JONG HYEON ,  KIM JE WOO

IPC: H04L27/26

Abstract: In accordance with a detection method in a wireless communication system, an initial hypothesis for a starting position of a desired signal within a received wireless communication signal may be determined. The desired signal may have a conjugate symmetric property. At least one correlation value may be determined based on the initial hypothesis. The at least one correlation value may indicate the extent to which at least one sample sequence selected from the received signal has the conjugate symmetric property.

公开(公告)号：CA2650633C

公开(公告)日：2012-08-07

申请号：CA2650633

申请日：2007-05-24

Applicant: QUALCOMM INC

Inventor： PARK JONG HYEON ,  PARK JU WON ,  KIM JE WOO

IPC: H04B7/04 ,  H04B1/10 ,  H04B1/16 ,  H04B14/08 ,  H04J11/00 ,  H04W72/00

Abstract: The present invention is a technique to process signals in a communication system. In one embodiment, a plurality of signal processing units processes signals received from a plurality of antennae. The signal processor units are controlled by operational mode control signals. A channel estimator estimates channel responses using the processed signals according to an operational mode. An equalizer and combiner generates an equalized and combined signal using the received signals and the estimated channel responses. A Carrier to Interference Noise Ratio (CINR) estimator estimates CINR from the equalized and combined signal. The estimated CINR is used to generate the operational mode control signals.